Quick answer

Plus-Plus baseplates give your builds a stable, flat foundation that prevents pieces from shifting or collapsing. Start by choosing the right baseplate for your project, then press pieces firmly onto the studs to lock them in place. Use multiple baseplates for larger structures and connect them edge-to-edge for seamless expansion.

Why use a baseplate?

A Plus-Plus baseplate turns a wobbly pile of pieces into a solid creation. The grid of studs grips each piece securely, so your build stays together even when you move it or add heavy sections. Without a baseplate, large models often tip over or separate at the seams. Baseplates also let you build in 2D first (like a flat mosaic) and then lift the creation into 3D without losing the shape.

Choosing the right baseplate for your project

Plus-Plus baseplates come in several colors, each suited to different themes. The Blue Baseplate 12-Pack is ideal for water scenes—oceans, rivers, lakes, or sky backdrops—because the color sets the scene without extra pieces. If you're building a landscape, choose a green or brown baseplate for land. For a neutral foundation, white or gray works well. The 12-pack gives you enough surface area for large collaborative builds or multiple small projects at once.

Common mistakes to avoid

One common mistake is not pressing pieces all the way down onto the studs. A loose connection makes the whole build unstable. Another is using a baseplate that is too small for your model—if the baseplate doesn't support the full footprint, the edges of your creation will sag. Also, avoid stacking baseplates directly on top of each other; they are meant to sit side by side, not stacked.

Step-by-step: How to build stronger with baseplates

  1. Step 1: Choose and prepare your baseplate: Select a baseplate color that matches your scene. Place it on a flat, clean surface. If you need a larger area, align two or more baseplates edge-to-edge so the studs line up evenly. Checkpoint: Make sure the baseplates are flush with no gap between them, or pieces may catch on the seam.
  2. Step 2: Press pieces firmly onto the studs: Push each Plus-Plus piece straight down onto a stud until you hear or feel a click. For corners and edges, press at a slight angle to ensure full contact. Do not twist the piece—it can loosen the grip. Common mistake: A piece that is only half-pressed will pop off easily and may cause the structure to lean.
  3. Step 3: Build from the center outward: Start your build in the middle of the baseplate and work your way to the edges. This distributes weight evenly and prevents the baseplate from curling up at the corners. Checkpoint: If the baseplate starts to lift at the edges, you may be building too close to the border—move your design inward.
  4. Step 4: Connect multiple baseplates for large builds: For a bigger project, snap baseplates together side by side. Use a row of Plus-Plus pieces across the seam to lock them together and hide the joint. This creates one continuous surface. Common mistake: Leaving the seam uncovered makes the structure weak at the connection point. Always bridge the seam with pieces.
  5. Step 5: Lift and move your creation safely: Once your build is complete, slide both hands under the baseplate to support the entire model. Lift evenly—do not grab the structure itself. The baseplate will hold everything together. Checkpoint: If the model wobbles when lifted, the baseplate may be too small. Add a second baseplate underneath for extra stability.

Product spotlight: Blue Baseplate 12-Pack

  • Baseplate 12-pack, Blue: Dive into bigger builds and endless imagination! Create oceans, rivers, lakes, sky scenes, and imaginative adventures with the Blue Baseplate 12-Pack. Designed for builders who love thinking big, this set includes twelve durable baseplates that provide a sturdy foundation for expansive creations, collaborative projects, and detailed displays. The blue color instantly sets a water or sky theme, saving you pieces you would otherwise use for background. Twelve baseplates give you enough space for large builds or group projects without running out of foundation.